Evaluation of plan quality metrics in stereotactic radiosurgery/radiotherapy in the treatment plans of arteriovenous malformations

Retrospective evaluation of SRS/SRT plan-quality metrics for arteriovenous malformations. Its methods section defines each metric: the RTOG conformity index (prescription isodose volume ÷ target volume; ideal 1), RTOG quality of coverage and homogeneity index, and the Paddick conformity index as the product of the under-treatment ratio (share of the target covered) and over-treatment ratio (share of the prescription isodose volume inside the target), noting that ICRU Report 91 recommends the Paddick conformity and gradient indices for reporting stereotactic plans. Full text read in Europe PMC (PMC6299748); citation checked against Crossref.

Open-access explanation of the stereotactic plan-quality metrics side by side — RTOG conformity, coverage and homogeneity indices, the Paddick conformity and gradient indices — with what each one misses.